|
- 精华
- 0
- 积分
- 884
- 经验
- 884 点
- 威望
- 22 点
- 金钱
- 1095 ￥
- 魅力
- 487
|
请教GWD数学2-31
There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines. If 3 magazines are to be selected at random from the 8 magz, what is the probability that at least one of the fashion magazines will be selected?
a. 1/2
b.2/3
c. 32/35
d. 11/12
e. 13/14
我的排列组合很糟糕...谢谢大家给我细心讲解。不胜感激！！
|
|
